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Forum: EcoModding Central

07-08-2011, 08:34 PM

Replies: 48

Eco remapping aka chiptuning

Views: 20,582

Posted By jfitzpat

Sorry, I saw this in the email 'best of' today...

Sorry, I saw this in the email 'best of' today and just had to comment. There are really three main approaches in altering factory tunes:

1. Reflashing
2. Piggy Back
3. ECU Replacement
...

Forum: Instrumentation

04-01-2010, 07:19 PM

Replies: 22

Closed Loop Mode

Views: 9,368

Posted By jfitzpat

It's probably worth noting that stoichiometric...

It's probably worth noting that stoichiometric ratio (lambda 1.0) is the peak thermal reaction, but it is not the best place to run an engine for either fuel economy or power.

Best economy is...

Forum: Instrumentation

02-24-2010, 01:46 PM

Replies: 10

Article: Fiat Introducing Fleet Version of eco:Drive

Views: 2,790

Posted By jfitzpat

Sort of. Common rail direct injection was...

Sort of. Common rail direct injection was actually invented by a Swiss guy named Huber, Hubert, something like that (sorry senior moment) right around 1970. Maybe a year or two earlier. He actually...

Forum: Open ReVolt: open source DC motor controller

02-16-2010, 06:20 PM

Replies: 49

How to build a reliable PCB

Views: 11,197

Posted By jfitzpat

I'm sorry, but that doesn't sound like the sort...

I'm sorry, but that doesn't sound like the sort of argument an engineer makes. Perhaps you are speaking from the point of view of a manufacturing technician?

The primary problem with leaded...

Forum: Instrumentation

02-12-2010, 02:17 PM

Replies: 23

Scangauge Suggestions

Views: 4,482

Posted By jfitzpat

No, not heated until condensation is cleared. And...

No, not heated until condensation is cleared. And not CL until all the indications are for in range combustion and the O2 sensors are at temp.

As far as first, you should generally be CL long...

Forum: Instrumentation

02-04-2010, 01:38 PM

Replies: 47

Priorities: RPMs vs VAC

Views: 8,195

Posted By jfitzpat

I don't want to come off as a naysayer, or...

I don't want to come off as a naysayer, or defender of regulations, but a lot of these issues are more complicated than they may seem at first glance. I also am not an expert in this particular area,...

Forum: Instrumentation

02-01-2010, 02:19 PM

Replies: 47

Priorities: RPMs vs VAC

Views: 8,195

Posted By jfitzpat

Sorry, I thought I had replied to this, but I...

Sorry, I thought I had replied to this, but I don't see it:

FWIW, the high swirl is more related to how it effects the flame front. There are always little vortex from filling the chamber, but...

Forum: Instrumentation

01-22-2010, 02:01 PM

Replies: 47

Priorities: RPMs vs VAC

Views: 8,195

Posted By jfitzpat

I'm sorry, but as a long time lurker I thought I...

I'm sorry, but as a long time lurker I thought I would chime in one this one, because lean and rich are sometimes used as relative terms ("too lean...") and that can be easily misunderstood in terms...

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